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发明名称
Telephone exchange apparatus and network telephone system
摘要
申请公布号
GB2407733(B)
申请公布日期
2006.01.11
申请号
GB20040020862
申请日期
2004.09.20
申请人
KABUSHIKI KAISHA TOSHIBA
发明人
TAKASHI WANATABE
分类号
H04B3/20;H04M7/00;H04B3/23;H04M1/24;H04M3/00;H04M3/18;H04M3/22
主分类号
H04B3/20
代理机构
代理人
主权项
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